Typical Application Circuit (Continued)
Usually, LLC resonant converters require large leakage inductance value. To obtain a large leakage inductance,
sectional winding method is used.
?
?
?
Core: EC35 (Ae=106 mm2)
Bobbin: EC35 (Horizontal)
Transformer Model Number: SNX-2468-1
Figure 30. Transformer Construction
Pin (S → F)
Wire
Turns
Note
N p
6 → 2
0.08 φ ×88 (Litz Wire)
36
N s1
N s2
12 → 9
10 → 13
0.08 φ ×234 (Litz Wire)
0.08 φ ×234 (Litz Wire)
Pins
Specifications
4
4
Bifilar Winding
Bifilar Winding
Remark
Primary-Side Inductance (L p )
Primary-Side Effective Leakage (L r )
2 6
2 6
550 ? H ± 10%
110 ? H ± 10%
100 kHz, 1 V
Short one of the Secondary Windings
For more detailed information regarding the transformer, visit http://www.santronics-usa.com/documents.html or contact
sales@santronics-usa.com or +1-408-734-1878 (Sunnyvale, California USA).
? 2010 Fairchild Semiconductor Corporation
FSFR2100 ? Rev.1.1.0
14
www.fairchildsemi.com
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